dictionary form vs extraction

dictionary form

noun
  • The basic form of a word used as a dictionary entry (of any part of speech, but especially of a verb). 

extraction

noun
  • An act of extracting or the condition of being extracted. 

  • A person's origin or ancestry. 

  • A removal of a tooth from its socket. 

  • Something extracted, an extract, as from a plant or an organ of an animal etc. 

  • An act of removing someone from a hostile area to a secure location. 

How often have the words dictionary form and extraction occurred in a corpus of books? (source: Google Ngram Viewer )